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Analytic models of the chemical evolution of galaxiesTechniques are described for constructing analytic models of the chemical evolution of galaxies subject to infall of metal-poor material onto a maturing disk. A class of linear models is discussed which takes the star-formation rate within a defined region to be proportional to the mass of interstellar gas within that region, and the instantaneous recycling approximation is adopted. The solutions are obtained by approximately matching the infall rate to parametrized familiies of functions for which the equations are exactly soluble. The masses, the primary and secondary metallicities, and the gas concentrations of radioactive chronometers can all then be analytically expressed. Surveys of galactic abundances in location and in time can be compared to the parameter spaces of the analytic representations.
Document ID
19870038085
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Clayton, Donald D.
(Rice University Houston, TX, United States)
Date Acquired
August 13, 2013
Publication Date
October 1, 1986
Publication Information
Publication: Astronomical Society of the Pacific, Publications
Volume: 98
ISSN: 0004-6280
Subject Category
Astrophysics
Accession Number
87A25359
Funding Number(s)
CONTRACT_GRANT: NAG9-100
Distribution Limits
Public
Copyright
Other

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